Tire spike



FIG. 1 is an upper, left-hand perspective view of an upper flange component of a tire spike of our new design, with the remainder of the body of said tire spike excluded by dotted lines;

FIG. 2 is a side plan view of the design of FIG. 1, both side views being identical to each other;

FIG. 3 is a front view thereof, the rear view being identical thereto; and,

FIG. 4 is top view thereof. 

The ornamental design for a tire spike, as shown and described. 